The NFL combine is the most important step in the NFL Draft process for the majority of prospects as hundreds of players travel to Indianapolis to be poked and prodded by 32 NFL teams. And there are several interesting snubs and surprises on the invitation list for the 2015 NFL combine.

USC's depth took a big blow when wide receiver George Farmer tore his ACL at practice Tuesday. The former five-star recruit, who has dealt with injuries during his first two years with the Trojans got the news Wednesday that he would need surgery and will miss the 2013 season, a source told CBSSports.com.